package com.gd.interceptor;

import com.gd.pojo.User;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class SpringMvcInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
/*        //获取请求的RUi:去除http:localhost:8080这部分剩下的
            String uri = request.getRequestURI();
             //UTL:除了login.jsp是可以公开访问的，其他的URL都进行拦截控制
             if (uri.indexOf("/login") >= 0) {
                 System.out.println("login");
                 return true;
             }
        //获取session
               HttpSession session = request.getSession();
                User user = (User) session.getAttribute("USER_SESSION");
                //判断session中是否有用户数据，如果有，则返回true，继续向下执行
                if (user!=null) {
                    System.out.println("有数据");
                    return true;
                }
        //不符合条件的给出提示信息，并转发到登录页面
        // request.setAttribute("msg", "您还没有登录，请先登录！");
         request.getRequestDispatcher("/user/login").forward(request, response);
        //    System.out.println("没数据");*/
        return true;


    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}
